8th Class Science Sample Paper

done Science Sample Paper-1 Total Questions - 37    [Download]

• question_answer1)

  Choose the correct option:

  (i) Cheek cells do not have

  A)
  cell membrane               
  done clear
  B)
  golgi apparatus
  done clear
  C)
  nucleus              
  done clear
  D)
                     plastids
  done clear
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• question_answer2)

  Choose the correct option:

  (ii) Which of the following secondary sexual character is not present in male?

  A)
  Growth of facial hair
  done clear
  B)
  Hair grows under the arms
  done clear
  C)
  Hair grows in the region above thighs
  done clear
  D)
  Development of breasts.
  done clear
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• question_answer3)

  Choose the correct option:

  (iii) 1 hertz is equal to

  A)
  1 vibration per minute      
  done clear
  B)
  10 vibrations per minute.
  done clear
  C)
  60 vibrations per minute
  done clear
  D)
  600 vibrations per minute
  done clear
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• question_answer4)

  Choose the correct option:

  (iv) The earth?s plate responsible for causing earthquakes is:

  A)
  The crust of the earth       
  done clear
  B)
  The mantle of the earth
  done clear
  C)
  The inner core of the earth  
  done clear
  D)
  The outer core of the earth.
  done clear
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• question_answer5)

  Choose the correct option:

  (v) The outer planet is

  A)
  Mercury           
  done clear
  B)
         Venus
  done clear
  C)
  Earth                  
  done clear
  D)
         Jupiter
  done clear
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• question_answer6)

  Choose the correct option:

  (vi) The substance that does not burn with flame is

  A)
  LPG                 
  done clear
  B)
         camphor
  done clear
  C)
  dry gas              
  done clear
  D)
         charcoal.
  done clear
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• question_answer7)

  Choose the correct option:

  (vii) Pitch of sound is determined by its

  A)
  frequency          
  done clear
  B)
         amplitude
  done clear
  C)
  speed                  
  done clear
  D)
         loudness
  done clear
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• question_answer8)

  Choose the correct option:

  (viii) The number of nuclei present in zygote is:

  A)
  None    
  done clear
  B)
         One
  done clear
  C)
  Two                    
  done clear
  D)
        Four
  done clear
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• question_answer9)

  Choose the correct option:

  (ix) Green colour of leaves is due to presence of the pigment.

  A)
  Chlorophyll    
  done clear
  B)
  Mitochondria
  done clear
  C)
  Ribosomes          
  done clear
  D)
      Chloroplast
  done clear
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• question_answer10)

  Choose the correct option:

  (x) Coal tar contains about _____ substances.

  A)
  400                  
  done clear
  B)
         300
  done clear
  C)
  100                     
  done clear
  D)
      200
  done clear
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• question_answer11)
  (i) Name the hormone which controls metamorphosis in frog. 
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• question_answer12)
                                                  (ii) While sieving grains, small pieces fall down which force pulls them down.    
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• question_answer13)
                                                  (iii) Fishes move easily in water. How?     
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• question_answer14)
                                                                                                  (iv) Define 1 Hertz.
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• question_answer15)
                                                                                                                                      (v) Plastic straws A and B are rubbed with dry cotton cloth. What will happen, if they are brought near each other? 
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• question_answer16)
  (vi) Why does banana appear yellow?
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• question_answer17)
                                              A bucket made up of plastic does not rust like a bucket made up of iron. Why?   
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• question_answer18)
                                      In what form is magnesium found in plants?          
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• question_answer19)
                                                  Look at the following figure where petroleum and natural gas deposits are shown. Why do we find oil layer above water layer?                                                                                                                                   
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• question_answer20)
  The calorific values of petrol and CNG are 45000 kj/kg, and 50000 kj/kg respectively. If you have vehicle which can run on petrol as well as CNG, which fuel will you prefer and why?    
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• question_answer21)
                                                              Write any two consequences of deforestation.  
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• question_answer22)
                                                                                                    Draw a labelled diagram of human ovum.     
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• question_answer23)
                                                                         

  Name the hormone which would be released during the following situations :

  (i) a frightened person.

  (ii) growth of a child to adult.

  (iii) development of caterpillar to moth.

  (iv) development of tadpole to frog.

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• question_answer24)

  In the circuit shown in Fig. when the key is closed, the compass needle placed in the match box deflects.

  Name the force which causes this deflection.

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• question_answer25)
  Name two methods of reducing friction with examples.                                                                                
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• question_answer26)
  Write difference between regular and irregular reflection.                                                                              
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• question_answer27)
  What is natural gas? What are the advantages of using CNG?                                                                      
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• question_answer28)
  Give two examples each for a solid, liquid and gaseous fuel along with some important uses.                   
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• question_answer29)
  Why are endemic organisms in greater danger of becoming extinct?                                                              
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• question_answer30)
  Label the parts A to E in the given diagram.                                                                                                
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• question_answer31)
  Draw a labelled diagram of female reproductive organs. 
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• question_answer32)
                                                              Write four ways through which AIDS is transmitted.   
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• question_answer33)
                                                                          Two friends are trying to push a heavy load as shown in fig. Suggest a way which will make this task easier for them.
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• question_answer34)

  Write down the names of parts of the eye in the blank spaces shown in fig. below.

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• question_answer35)
  Write a short note about planets of the solar system.            
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• question_answer36)
  It is said, "\[C{{O}_{2}}\] Contributes to global warming". Explain.            
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• question_answer37)
                                                          Explain the use of Bacteria, Fungi and Algae.
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